Problem Description:
The task is to classify each angle in the provided worksheet as "straight," "right," "acute," or "obtuse." The definitions of these angles are as follows:
-
Straight Angle: An angle that measures exactly 180 degrees. It looks like a straight line.
-
Right Angle: An angle that measures exactly 90 degrees. It forms a square corner.
-
Acute Angle: An angle that measures less than 90 degrees. It is smaller than a right angle.
-
Obtuse Angle: An angle that measures more than 90 degrees but less than 180 degrees. It is larger than a right angle but smaller than a straight angle.
Solution:
We will analyze each angle in the worksheet and classify it based on the definitions above.
#### Row 1:
1.
First Angle: This angle forms a square corner, which means it is a
right angle.
- Classification:
Right
2.
Second Angle: This angle is larger than a right angle but smaller than a straight angle. Therefore, it is an
obtuse angle.
- Classification:
Obtuse
3.
Third Angle: This angle looks like a straight line, which means it is a
straight angle.
- Classification:
Straight
#### Row 2:
4.
Fourth Angle: This angle is smaller than a right angle. Therefore, it is an
acute angle.
- Classification:
Acute
5.
Fifth Angle: This angle forms a square corner, which means it is a
right angle.
- Classification:
Right
6.
Sixth Angle: This angle is smaller than a right angle. Therefore, it is an
acute angle.
- Classification:
Acute
#### Row 3:
7.
Seventh Angle: This angle is larger than a right angle but smaller than a straight angle. Therefore, it is an
obtuse angle.
- Classification:
Obtuse
8.
Eighth Angle: This angle looks like a straight line, which means it is a
straight angle.
- Classification:
Straight
9.
Ninth Angle: This angle is larger than a right angle but smaller than a straight angle. Therefore, it is an
obtuse angle.
- Classification:
Obtuse
Final Answer:
```
Row 1: Right, Obtuse, Straight
Row 2: Acute, Right, Acute
Row 3: Obtuse, Straight, Obtuse
```
Thus, the classifications for all the angles are:
\[
\boxed{\text{Right, Obtuse, Straight, Acute, Right, Acute, Obtuse, Straight, Obtuse}}
\]
Parent Tip: Review the logic above to help your child master the concept of obtuse angle worksheet.
